JPS646924Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This case relates to foam/liquid ejecting heads.

``Problems to be solved by conventional techniques and inventions'' Conventionally, a spray head that has a spray nozzle consisting of a spin groove and a nozzle and obtains a spray by ejecting pressurized liquid while turning it into a vortex is already well known. ing.

In addition, in recent years, a foaming head that has a foaming cylinder connected to the spray nozzle and a means for supplying air into the foaming cylinder is attached to the outside of the spray head, so that the mist ejected from the spray nozzle can be controlled. As well as collecting with a foam tube,
There is a foam ejecting head that mixes outside air and turns it into foam (for example, Japanese Utility Model Application No. 56-28763).

The present invention aims to make it possible to arbitrarily switch between ejecting foam and liquid in such a foam ejecting head, and to make the switching easily possible with a single touch. .

``Means for Solving the Problems'' In the present invention, a spin groove 22 is provided at the center of the front surface of the head body 1 into which the pressurized liquid is introduced from the rear, and a spin groove 22 is provided at the front end of the head body 1 to generate a vortex in the supplied pressurized liquid. , a nozzle 3 communicating with the center of the spin groove 22
3 is disposed so as to be able to approach and move away from the spin groove 22, and the nozzle head 3 is formed into a shallow cap shape so that the peripheral wall 31 can be rotated watertight around the outer periphery of the front end of the head body 1.・The nozzle 33 is fitted so that it can be slid in and out, and the nozzle 33 is fitted on the outside of the nozzle head 3.
In addition to providing a foaming cylinder 43 corresponding to the foaming cylinder, a foaming head 4 is provided, which is a means for supplying air into the foaming cylinder. The nozzle head 3 is fitted and fixed, and the second half of the inner periphery is screwed into a proper position on the outer periphery of the head body 1.

"Operation" Since the structure is as shown above, screw the foam head 4 into the
When pressurized liquid is supplied to the head body 1 with the nozzle head 3 close to the spin groove 22 (FIG. 1), the liquid becomes a high-speed overflow in the spin groove 22 and is ejected from the nozzle 33. This becomes a spray, which is gathered around the inner periphery of the foam tube 43, and is mixed with outside air by the air supply means to become foam, which is ejected from the foam tube 43.

Next, in a state where the foaming head 4 is screwed out and the nozzle head 3 is separated from the spin groove 22 (FIG. 2),
When pressurized liquid is supplied to the head body 1, the liquid does not form a vortex in the spin groove 22, but is ejected from the nozzle 33 as a liquid in a straight line.

"Example" The illustrated embodiment will be described below.

In the figure, 1 is a head body with an open front end, 2 is an interior member with a spin groove provided in the head body, 3 is a nozzle head attached to the front end of the head body so as to be movable in and out, and 4 is the nozzle. The foam head 5 which is stacked on the outside of the head and screwed into the head body 1 is a discharge valve constructed between the back of the head body 1 and the rear part of the interior member 2, and is made of a suitable synthetic resin.

The head body 1 is constructed by making the tip of a discharge pipe A have a large diameter, has a thread 11 circumferentially in the middle of the outer periphery, has a stopper 12 protruding from a part immediately after the thread, and further includes: A flange 13 is provided at the rear end, a locking protrusion 14 is arranged at the front end on the inner periphery, and a valve seat 51 facing forward is formed at the rear end.

The spin-grooved interior member 2 has a base 21 at its front end that fits into the front inside of the head body 1, and has a spin groove 22 that rotates the liquid in a high-speed vortex flow at the center of the front surface of the base. Liquid passages 23, 23 are formed to open the groove 22 rearward, and a valve portion 52 is integrally connected to the rear surface of the base portion 21 via an annular elastic portion 24, so that the entire head body 1 The valve part 52 is seated on the valve seat 51 by being inserted into the valve seat 51, and the outer edge of the base part 21 is engaged with the locking protrusion 14 to prevent it from coming off.

The nozzle head 3 is formed into a shallow cap shape, the peripheral wall 31 is watertightly and slidably fitted to the outer periphery of the front end of the head main body 1, and the central portion 32 is recessed to extend toward the front of the interior member 2. A nozzle 33 is provided in the center of the abutment generally, and several ventilation grooves 34 are formed in the radial direction on the front peripheral edge.

The foam head 4 is formed into a deep cap shape, and the peripheral wall 4
A thread 42 is provided around the middle part of the second half of the inner circumference of the head body 1 and is screwed into the head body 1, so that the end of the peripheral wall 41 abuts against the flange 13 of the head body 1, and a stopper is provided at a part of the inner edge of the end. 42,
When it is screwed in the loosening direction, it abuts against the stopper 12 of the head body 1 (however, at the beginning of screwing, the stoppers 42 and 12 are forcibly crossed over each other).

Further, the foaming head 4 is fixed by fitting the peripheral wall 31 of the nozzle head 3 into the middle part of the first half of the inner circumference of the peripheral wall 41,
A foam tube 43 is provided in the middle of the nozzle head 3 and protrudes inward, and several intake holes 44 are bored around the foam tube.
No. 3 has an inner periphery tapered outward to gradually become smaller in diameter, and its rear end abuts against the front peripheral edge of the nozzle head 3.

The discharge valve 5 is mounted on the valve seat 5 provided on the head body 1.
1 and an upper valve part 52 of an interior member 2 with a spin groove seated thereon, and the valve part is urged and seated by an elastic part 24 continuous in front of the valve part.

In the state shown in FIG. 1, when pressurized liquid is sent from the discharge pipe A, the liquid opens the discharge valve 5, flows into the head body 1, and flows into the liquid passage 2.
3 and 23, enters the spin groove 22, turns into a high-speed vortex in the spin groove, and is ejected from the nozzle 33. Therefore, a spray is generated from the nozzle 33, and then the spray enters the foam tube 43. At the same time, outside air is mixed in through the intake holes 44 and the ventilation grooves 34, and is ejected from the foam cylinder 43 as foam.

Next, when the foaming head 4 is screwed in the loosening direction until the stoppers 42 and 12 touch each other, the foaming head 4 and the nozzle head 3 move forward together, as shown in FIG.
The center part 32 of the nozzle head is the interior member 2 with spin grooves.
, that is, separated from the spin groove 22 .

Therefore, in the state shown in Fig. 2, the discharge pipe A
When pressurized liquid is sent from
Since the bubbles are separated from each other, no vortex is generated, and therefore, the foam is ejected from the nozzle 33 as a liquid in a straight line without touching the foam tube 43.

"Effect of the invention" According to the present invention, foam and liquid can be ejected arbitrarily, and the switching can be done extremely easily with one touch by screwing the foaming head 4. Moreover, the structure is simple and manufacturing is easy. Moreover, it has a strikingly beautiful appearance with no unnatural protrusions.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a cutaway side view of the foam jetting state, and FIG. 2 is a cutaway side view of the liquid jetting state. DESCRIPTION OF SYMBOLS 1... Head main body, 2... Interior member with spin grooves, 3... Nozzle head, 4... Foaming head, 5... Discharge valve.

Claims (1)

[Scope of utility model registration request] A spin groove 22 that generates a vortex in the supplied pressurized liquid is provided at the center of the front surface of the head body 1 into which the pressurized liquid is introduced from the rear, and a nozzle 33 that communicates with the center of the spin groove 22 is provided at the front end of the head body 1. A nozzle head 3 is disposed so as to be able to approach and move away from the spin groove 22, and the nozzle head 3 is formed into a shallow cap shape so that the peripheral wall 31 can be rotated and watertightly attached to the outer periphery of the front end of the head body 1. It is fitted so that it can slide in and out, and
A foaming tube 43 corresponding to the nozzle head 33 is provided on the outside of the nozzle head 3, and a foaming head 4 is provided with a means for supplying air into the foaming tube, and the foaming head has a deep cap shape. A foam/liquid ejecting head characterized in that the nozzle head 3 is fitted and fixed to the first half of the inner circumference of the peripheral wall 41, and the second half of the inner circumference is screwed to a proper position on the outer circumference of the head body 1.